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    Linux Forums > GNU Linux Zone > Gaming / Games / Multimedia / Entertainment > Mplayer DVD Sound issues

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 Gaming / Games / Multimedia / Entertainment   General discussion about Games, video, sound, multimedia, DVD's in Linux

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Old 05-30-2006   #1 (permalink)
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Mplayer DVD Sound issues
I'm using mplayer on an Arch system, and when I tried to play a DVD, the sound came out funny. I ran it from the console and got this:
Code:
Checking audio filter chain for 48000Hz/2ch/ac3 -> 48000Hz/2ch/ac3...
AF_pre: 48000Hz/2ch/ac3
[AO OSS] Can't set audio device /dev/dsp to ac3 output, trying s16le...
AO: [oss] 48000Hz 2ch s16le (2 bps)
Building audio filter chain for 48000Hz/2ch/ac3 -> 48000Hz/2ch/s16le...
[format] Sample format big-endian AC3 not yet supported 
[libaf] Reinitialization did not work, audio filter 'format' returned error code -2
Couldn't find matching filter/ao format!
Anyone know how to fix it or what I may have done wrong?
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Old 05-30-2006   #2 (permalink)
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Did you install the "codecs" package? (Or "win32codecs" perhaps.)
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Old 05-31-2006   #3 (permalink)
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Yeah, the codecs package is installed.
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Old 05-31-2006   #4 (permalink)
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Apparently it is something related to DTS support:
http://forums.gentoo.org/viewtopic-t...light-ac3.html
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Old 05-31-2006   #5 (permalink)
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Thank you. That is what I was having trouble with, although I'm not sure how I would fix it. Unfortunately, that was a rental DVD and I returned it, so I don't know how to reproduce the error.

However, while checking other DVD's around the house to replicate the problem, I got new errors! The pop-up alert said "FATAL: Could not initialize video filters (-vf) or video output (-vo)."

Code:
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 720 x 480 (preferred csp: Mpeg PES)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
VDecoder init failed :(
Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG-1 or 2 (libmpeg2))
==========================================================================
Checking audio filter chain for 48000Hz/2ch/s16le -> 48000Hz/2ch/s16le...
AF_pre: 48000Hz/2ch/s16le
AO: [oss] 48000Hz 2ch s16le (2 bps)
Building audio filter chain for 48000Hz/2ch/s16le -> 48000Hz/2ch/s16le...
Starting playback...
a52: error at resampling

FATAL: Could not initialize video filters (-vf) or video output (-vo).
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Old 05-31-2006   #6 (permalink)
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Hum... what's your video & audio hardware? What is the content of your ~/.mplayer/config file?

You can view the complete liste of mplayer audio output with this command:
Code:
mplayer -ao help
and test which works better for you (best quality & least CPU usage).

For video, you might want to test as well:
Code:
mplayer -vo help
For more info on video filters:
Code:
mplayer -pphelp
Some video filters options are tailored for DVD viewing, like:
Code:
mplayer -vf pp=lb:a dvd://1 -dvd-device /dev/dvd
To get the most out of MPlayer, you need a solid config file (subtitles adjustments, video filters, caching, etc.).
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